I see they finally addressed the T slot issue, ie, adjustable bleed to keep proper T slot exposure on different engine combos. Something we've been doing with drilled throttle blades. Now if all 4 slots are cut accurately then that's a real improvement!!

I don't know, they still have to compete with QF. I knew they were coming, but not sure the new features are all they could have done. Stepping up the size was certainly necessary, the 1475 version will be nice to check out.

I agree with Barry a good tune up and some help from here can make any of these new carbs work better. Im sure they dont come with T-slot restrictors ...... but they do look nice! Id like to see a pic of the flange that bolts to the main body.

Probably at or just over 1800 CFM dry. My 2.25 x 2.055 flows 1740 with no skirts, my 2.400 x 2.100 with small skirts over 1800 CFM. The 1475 they have is likely in the 1700 CFM dry, even with skirts probably around 1650 CFM dry.

I have one of them 3 circuit carbs from Holley and it's an HP version and the number starts with an 8,(I need to go look at it again and write it down again) I had some stumbling issue's last year that I think were tied in to not having enough heat in the engine, but it would come and go, so I dug into it and found some things that needed replacing and or changed and I thought I had fixed it, but to no avail, it was still there. It ran very well when it worked good, but something is wrong and I need to go thru all my checks and measurements to get it back to stock setup.

I currently have 88 jets in all 4 corners and it is still pig rich at ldle as are the 3 circuits and I am betting it is the transfer slot that has been mentioned so much on here, so I will look into that as well.

I had a QFT 1250 on my little 505 and it responded very well but did not change in mph or et when I tested it, it was bone stock with only jets changed. Sold that one last year finally, just too big for my combo.

I am looking at going with another 1150 but a 2 circuit and tune that, or the new Gen 3 Holley 2 circuit and tune that, or!!!!!!

I read alot of carb stuff on many sites that your on and beside the bashing that goes on and gets off track very rapidly like, I do learn some things from time to time. Bill S. (aka banjo) is the guy with the Blue Nova in a wheelstand and he mentioned you again that helped him with his 3 circuit carb and it worked very well for him. I try not to get too caught up in who has the best carb as it is just a mixing machine and some work better then others but not necessarly needed if tuning and some knowledge is obtained... I do love the new BLING FACTOR on al the new carbs and from the custome guys too but again, sometimes just not needed to be more consistant.

I just need to tune my carb a little better I think and go thru it again and check everything out. Your more them welcome to send advice if you want, I am all ears I wish it was as crisp at the QFT was is one thing I wish it would do, and I am sure a set of billet blocks would help with a good known tuneup in it, and a couple of them light weight bowls too with better site holes like the QFT stuff... along with a T-slot check and adjustment which is probably needed... I would attempt to do repairs myself but I would rather have someone that has done one or more to do it and sazve me from buying tools I will only use once, maybe twice... Hell, it just needs a super tuneup from you PM me if needed and we can chat more about it if you have time. I like the now Gen 3 carb for the less weight and the QFT stuff but maybe I can get my crap to work a little better for a lower price vs. a new one, I am about loosing weight at this point and any little bit will help...